Incident Overview
A pilot landed at a private airstrip and refueled the airplane with seven gallons of automotive fuel. There was no record of the pilot checking for fuel contaminants after refueling. During taxi, no aircraft problems were reported.
Loss of Engine Power
While climbing through 150 feet after takeoff, the pilot noted a rough engine condition, followed by a loss of engine power. The pilot elected to return to the airport for an emergency landing. During the landing attempt, the airplane collided with trees short of the airport.
Post-Accident Examination
An examination of the airplane revealed contamination in the fuel system, including rust and debris in the fuel tank, gasculator, carburetor inlet screen, and carburetor bowl. Examination of the engine, a surplus military Lycoming-Spencer O-290-G4, failed to disclose a mechanical problem.